Adrian, can you also list any extensions in your installation of IceCatMobile?
I don't know what the Polish-language menu equivalents are, but the addons list can be found, when about:addons is entered into the address bar.
I was able to see the images and image previews at the site you specified without effort in an older IceCat version.
You should also know, that
olx.pl includes or accesses content from
accounts.google.com and
plus.google.com (the other Google domains "touched" by
olx.pl are
www.google.com and
www.gstatic.com ). I found all this out through desktop NoScript. I had to manually deny inclusion of these domains from
olx.pl both in desktop and mobile versions of NoScript.
Application boundaries enforcing (ABE) is more difficult in Android NoScript because of its more-or-less manual nature, as it requires copying the specific ABE configuration line (text string) into a separate text editor (VimTouch, by the way), following its somewhat strict syntax, and then pasting it back into about:config.
-M.